Measuring instrument.



A. HAYMOWICZ.

MEASURING INSTRUMENT.

APPLICATION TILED APR.30. 1913.

1,084,146. Patented Jan. 13, 1914.

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U NfTED STATES PATENT UFFfE ADOLF HAYIVIOW'ICZ, 0F OTIS, OREGON.

MEASURING INSTRUMENT.

resales.

To all whom it may concern:

Be it known that I, ADoLr HAYMowIoz, a citizen of the United States, residing at Otis, in the county of Lincoln and State of Oregon, have invented certain new and useful Improvements in Measuring Instruments, of which the following is a specification, reference being had to the accompany-- ing drawings.

This invention relates to new and useful improvements in measuring instruments and more particularly to a compass or the like and the primary object of the invention is to provide a device of this character with improved means for the adjustment thereof.

A further object of the invention resides in providing a device of this character in which the quadrant is provided with teeth and a pivotally-mounted adjusting screw is carried on one of the legs of the device and adapted for engagement with the teeth of said quadrant and a still further object resides in providing a device in which the adjusting screw is yieldingly held in its effective position.

A still further object of the invention resides in providing a device which is simple and durable in construction, inexpensive to manufacture and one which will be very efficient and useful in operation.

With these and other objects in view, the invention consists in the novel features of construction, combination and arrangement of parts as will be hereinafter referred to and more particularly pointed out in the specification and claims.

In the accompanying drawing forming a part of this application, Figure 1 is a front elevation of the device showing the adjusting screw in its effective position. Fig. 2 is a vertical section therethrough as seen on line 2-2, Fig. 1; and Fig. 3 is a perspective view of the adjusting screw removed.

In describing my invention, I shall refer to the drawing in which similar reference characters designate corresponding parts throughout the several views and in which 1 indicates a compass or like instrument having a pair of legs 2 and 3 pivoted together, at their upper ends in the usual or any preferred manner. Secured to the one leg 2 of the device and guided through a keeper 6t, on the other leg thereof, is an arcuate guide arm or quadrant 5, the lower edge of which is provided with teeth 6.

Loosely pivoted on a pivot pin 7 on the Specification of Letters Patent.

Application filed April 30, 1913.

Patented Jan. 13, ftlflet.

Serial No. 764,607.

leg 3, is stem 8, a portion of which is reduced to provide the shoulders 9 thereon. These shoulders are each, provided with a pair of oppositely beveled faces to permit said stem to be moved somewhat upwardly or downwardly, aid faces being adapted to contact with the edge of the leg 3, to limit the movement thereof in its respective positions. The stem 8 is also provided on its outer end with a head and mounted on said stem between the shoulders and head thereon, is a worm gear or the like 10, the threads of which are adapted to engage the teeth 6 of the quadant As stated, the stem 8 carrying this worm 10 is loosely pivoted on the leg 3 so that the tendency of the same would be to fall down *ardly away from the teeth of the quadrant 5 and in order to normally force said worm 1O upwardly into engagement with said teeth 6, a leaf spring 11 is provided. This leaf spring is secured at its lower end by means of a screw 12 to the outer edge of the leg 3, the upper end of said spring being bent outwardly and engaged with the inner face of the worm 10. This, obviously, forces the stem 8 with the worm carried thereon upwardly and the threads of said worm will engage the teeth 6. By turning this worm 1.0 on the stud 8, it is obvious that the leg 2 may be adjusted with respect to the leg Of course, in making wide adjustments, it is preferable to force the stem 8 with the worm thereon, downwardly against the tension of the spring 11, so that the opposite leg may be moved by hand until the desired position is obtained.

From the foregoing description of the construction of my improved device, the operation thereof will be readily understood and it will be seen that I have provided a device which is simple and durable in construction, inexpensive to manufacture and one which will be very efficient and useful in operation.

While I have particularly described the elements best adapted to perform the functions set forth, it is obvious that various changes in form, proportion and in the minor details of construction may be resorted to without departing from the spirit or sacrificing any of the principles of the invention.

Having thus described this invention, what is claimed is 1. A device of the class described comprising a pair of legs pivoted together at 7 prising a pair of legs pivoted one to the other at their upper ends, a quadrant carried on one of said legs and guided through a portion of the other, the lower edge of said quadrant being provided with teeth, a stem loosely pivoted on the last mentioned leg, means formed on the stem to limit the pivotal movement thereof on said leg, a worm loosely carried on said stem, and yielding means in engagement with said worm to normally retain the latter in engagement with the teeth of said quadrant.

3. A device of the class described comprising a pair of legs pivoted one to the other at their upper ends, a quadrant carried on one of said legs and guided through a portion of the other, the lower edge of said quadrant being provided with teeth, said last mentioned leg being provided with a slot, a stem loosely pivoted in the slot of the last mentioned leg, said stem being provided with beveled shoulders to limit the pivotal movement thereof in said leg, a worm loosely carried on said stem, and yielding means in engagement with said worm to normally force the same into engagement with the teeth of said quadrant.

4. A device of the class described comprising a pair of legs pivoted one to the other at their upper ends, a quadrant carried on one of said legs and guided through a portion of the other, the lower edge of said quadrant being provided with teeth, said last mentioned leg being provided with a slot, a stem loosely pivoted in the slot of the last mentioned leg, said stem being provided with beveled shoulders to limit the pivotal movement thereof in said leg, a 43 ADOLF HAYMO'WICZ.

Witnesses G. H. CHURCH, F. N. MEWHIRKER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

